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Gearbox Oil

Posted: Sat Sep 21, 2013 11:06 pm
by jjmartin349571
Hi folks,

I've dropped the oil from my 2nd gen's gearbox so that I can pull the drive shafts. Anyway, I checked the service manual to see if any of the oil I had was the right viscosity:

Image

That's a lot thinner than any gearbox oil I have!! :? This is engine oil viscosity right? So do I just whack in engine oil?

Also, I read that chart as saying I should use 20w-40 oil for the temperatures we get here, am I correct?

Cheers,
Josh

Posted: Sat Sep 21, 2013 11:10 pm
by jjmartin349571
A quick look online suggests 20w-40 isn't easily available, so I take it 10w-40 is my best bet?

Posted: Sun Sep 22, 2013 12:39 am
by Space1999
10W40 full synthetic - such as Redline or Gulf - will work beautifully. Don't use cheap stuff, as you don't need much, and it will transform the shift, and reduce noise and wear. Easy!

Posted: Sun Sep 22, 2013 8:25 am
by lewd lude lover
dont use engine oil in the gearbox. the clue is in the name :lol:

the difference (viscocity) between what came out of mine and what went in was huge. amsoil imho.

Posted: Sun Sep 22, 2013 10:14 am
by wurlycorner
Those viscosities sound like it's talking about engine oil, but 30k service interval? :nono: must be talking gearbox.
It's unusual, but not unheard of for a gearbox to use engine oil.
Looks like 10w-40 or 10w-30 then yep.
What did the stuff that came out smell like? Gearbox oil normally smells much more 'heavy' than engine oil.

@Benny ?

Posted: Sun Sep 22, 2013 10:18 am
by Space1999
Honda has recommended using engine oil in its manual transmissions in its cars and bikes for over 40 years...

Posted: Sun Sep 22, 2013 10:19 am
by Benny
I've only ever used Honda MTF. I've no idea what Viscosity it is though.

Posted: Sun Sep 22, 2013 11:11 am
by Ted
Yip 10w/40 is the stuff to put in. This has been discussed before.

Posted: Sun Sep 22, 2013 12:02 pm
by wurlycorner
Well there you go... I've never looked into gearbox oils on ludes before, so had no idea.

Posted: Sun Sep 22, 2013 2:48 pm
by indigolemon
You can use 10w40 yes. However it's the baseline spec for what's needed.

I'd be more inclined to use something designed specifically for gearboxes, so options are:

1 - 10w40 engine oil - From Anywhere - the base stuff
2 - Honda MTF - From Honda Dealers - ideal for a gearbox with low miles in perfect condition
3 - Torco MTF - From these guys: http://www.ludegeneration.co.uk/nimbus-motorsport-f80/ - ideal for higher mileage gearboxes with no issues
4 - Amsoil MTF - From these guys: http://www.ludegeneration.co.uk/opie-oils/ - ideal for gearboxes with high miles and shift issues